(377b) Modeling of Excess Molar Volumes for Binary Mixtures Containing {Dimethyl Carbonate (DMC) + Alcohol} at T = (288.15 – 308.15) K and Atmospheric Pressure

Authors: 
The knowledge of properties of liquid systems such as density and, consequently, properties derived from it, are important in Chemical Engineering, mainly, in projects and operation of chemical processes. Excess properties have been a qualitative and quantitative way to predict the deviation from ideality of binary liquid solutions. Furthermore, these properties have been used in the development and test of models and new theories of solutions. The current work is a continuation of an experimental and modeling study of excess molar properties of binary liquid systems [1-3], which objective consisted in experimental determination of densities of binary liquid solutions of mixtures containing {dimethyl carbonate (DMC) + alcohols (methanol, ethanol, 1-propanol)} in all composition range, at different temperature T = (288.15 – 308.15) K and atmospheric pressure. The density measurements were accomplished by using a mechanical oscillation densimeter (DMA 4500 Model) coupled to a high pressure cell (DMA HP), both manufactured by Anton Paar. The densities of pure components and respective solutions allowed to calculate indirectly the excess molar volume of the studied systems, which was correlated by using a Redlich-Kister polynomial. The excess molar volume data were also used to test the applicability of Prigogine-Flory-Patterson Theory (PFP Theory) and Extended Real Associated Solution Model (ERAS Model). For {DMC + methanol} system, the results suggest that structural, chemical and physical effects are relevant, while physical interactions should prevail on the systems containing ethanol and 1-propanol.

References

1. G.V. Olivieri, C.S. Cunha, L.S. Martins, P.A.M. Paegle, S.D. Nuncio, A.A. Morandim-Giannetti, R.B. Torres. Thermodynamic and spectroscopic study of binary mixtures of n-butylammonium oleate ionic liquid + alcohol at T = 288.15–308.15 K. Journal of Thermal Analysis and Calorimetry, 2018. 131: p. 2925-2942.

2. S.S. Bittencourt, H.E. Hoga, R.B. Torres, J.V.H. d’Angelo. Thermodynamic and spectroscopic properties of binary mixtures of n-butylammonium butanoate ionic liquid with alcohols at T = (293.15 to 313.15) K. Journal of Chemical Thermodynamics, 2017. 105: p. 238-252.

3. H.E. Hoga, R.B. Torres. Volumetric and viscometric properties of binary mixtures of methyl tert-butyl ether (MTBE) + alcohol at several temperatures and p = 0.1 MPa: Experimental Results and application of the ERAS Model. Journal of Chemical Thermodynamics, 2011. 43: p. 1104-1134.

Aknowledgements

This study has been supported by the Fundação Educacional Inaciana Padre Sabóia de Medeiros (FEI) and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) (Process 2016/02652-3).